1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Dilute acid
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
{???} Indistinct
Distinct on {010}, imperfect {110} and {011}
1.7 Mohs Hardness
1.8 Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references